3198021 has 16 divisors (see below), whose sum is σ = 4479744. Its totient is φ = 2026944.

The previous prime is 3198011. The next prime is 3198031. The reversal of 3198021 is 1208913.

It is an interprime number because it is at equal distance from previous prime (3198011) and next prime (3198031).

It is not a de Polignac number, because 3198021 - 2⁷ = 3197893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3197982 and 3198000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4911 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (279984).

Almost surely, 2^3198021 is an apocalyptic number.

It is an amenable number.

3198021 is a deficient number, since it is larger than the sum of its proper divisors (1281723).

3198021 is a wasteful number, since it uses less digits than its factorization.

3198021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 3198021 is about 1788.3011491357. The cubic root of 3198021 is about 147.3308757715.

The spelling of 3198021 in words is "three million, one hundred ninety-eight thousand, twenty-one".